<!DOCTYPE HTML>
<html lang="en">
	<head>
		<title>three.js - particles - floor</title>
		<meta charset="utf-8">
		<meta name="viewport" content="width=device-width; initial-scale=1.0; maximum-scale=1.0; user-scalable=0;"/>
		<style type="text/css">
			body {
				background-color: #000000;
				margin: 0px;
				overflow: hidden;
			}

			a {
				color:#0078ff;
			}
		</style>
	</head>
	<body>

		<script type="text/javascript" src="../build/Three.js"></script> 

		<script type="text/javascript">

			var SCREEN_WIDTH = window.innerWidth,
			SCREEN_HEIGHT = window.innerHeight,

			mouseX = 0, mouseY = 0,

			windowHalfX = window.innerWidth / 2,
			windowHalfY = window.innerHeight / 2,

			SEPARATION = 200,
			AMOUNTX = 10,
			AMOUNTY = 10,

			camera, scene, renderer,

			stats;

			init();
			setInterval(loop, 1000 / 60);

			function init() {

				var container, separation = 100, amountX = 50, amountY = 50,
				particles, particle, material;

				container = document.createElement('div');
				document.body.appendChild(container);

				camera = new THREE.Camera( 75, SCREEN_WIDTH / SCREEN_HEIGHT, 1, 10000 );
				camera.position.z = 1000;

				scene = new THREE.Scene();

				renderer = new THREE.CanvasRenderer();
				renderer.setSize(SCREEN_WIDTH, SCREEN_HEIGHT);
				container.appendChild(renderer.domElement);

				// particles

				material = new THREE.ParticleCircleMaterial( { color: 0xffffff, opacity: 1 } );

				for (var i = 0; i < 1000; i++) {

					particle = new THREE.Particle( material );
					particle.position.x = Math.random() * 2 - 1;
					particle.position.y = Math.random() * 2 - 1;
					particle.position.z = Math.random() * 2 - 1;
					particle.position.normalize();
					particle.position.multiplyScalar( Math.random() * 10 + 450 );
					scene.addObject( particle );

				}

				// lines

				for (var i = 0; i < 300; i++) {

					var geometry = new THREE.Geometry();

					var vector = new THREE.Vector3( Math.random() * 2 - 1, Math.random() * 2 - 1, Math.random() * 2 - 1 );
					vector.normalize();
					vector.multiplyScalar( 450 );

					geometry.vertices.push( new THREE.Vertex( vector ) );

					var vector2 = vector.clone();
					vector2.multiplyScalar( Math.random() * 0.3 + 1 );

					geometry.vertices.push( new THREE.Vertex( vector2 ) );

					var line = new THREE.Line( geometry, new THREE.LineBasicMaterial( { color: 0xffffff, opacity: Math.random() } ) );
					scene.addObject(line);
				}

				/*
				stats = new Stats();
				stats.domElement.style.position = 'absolute';
				stats.domElement.style.top = '0px';
				container.appendChild(stats.domElement);
				*/

				document.addEventListener( 'mousemove', onDocumentMouseMove, false );
				document.addEventListener( 'touchstart', onDocumentTouchStart, false );
				document.addEventListener( 'touchmove', onDocumentTouchMove, false );
			}

			//

			function onDocumentMouseMove(event) {

				mouseX = event.clientX - windowHalfX;
				mouseY = event.clientY - windowHalfY;
			}

			function onDocumentTouchStart( event ) {

				if(event.touches.length > 1) {

					event.preventDefault();

					mouseX = event.touches[ 0 ].pageX - windowHalfX;
					mouseY = event.touches[ 0 ].pageY - windowHalfY;
				}
			}

			function onDocumentTouchMove( event ) {

				if(event.touches.length == 1) {

					event.preventDefault();

					mouseX = event.touches[ 0 ].pageX - windowHalfX;
					mouseY = event.touches[ 0 ].pageY - windowHalfY;
				}
			}

			//

			function loop() {

				camera.position.x += ( mouseX - camera.position.x ) * .05;
				camera.position.y += ( - mouseY + 200 - camera.position.y ) * .05;
				camera.updateMatrix();

				renderer.render( scene, camera );

				// stats.update();
			}

		</script>
	</body>
</html>
